High Bandwidth Visible Light Communications Based on a Post-Equalization Circuit
High Bandwidth Visible Light Communications Based on a Post-Equalization Circuit
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DOI：
10.1109/lpt.2013.2290026
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发表时间：
2014-01-15
影响因子：
2.6
通讯作者：
Chen, Hongda
中科院分区：
文献类型：
--
作者：
Li, Honglei;Chen, Xiongbin;Chen, Hongda
这封信报道了一项关于扩展使用磷光白光 LED 的可见光通信 (VLC) 系统带宽的研究。磷光元件的缓慢响应将白光 LED 的调制带宽限制在较低的 MHz 范围内。在这封信中，我们提出了一种后均衡电路，其中包含两个无源均衡器和一个有源均衡器。通过蓝色滤波和后均衡电路，我们的 VLC 系统实现了 151 MHz 的带宽，允许 OOK-NRZ 数据传输高达 340 Mb/s。 VLC 链路使用单个一瓦白色 LED 在 43 厘米处运行，误码率低于 2 x 10(-3)，处于前向纠错限制内。
A research in extending bandwidth of the visible light communication (VLC) system that uses phosphorescent white LED has been reported in this letter. Slow response of the phosphorescent component limits the modulation bandwidth of white LED to the lower MHz range. In this letter, we present a post-equalization circuit that contains two passive equalizers and one active equalizer. With blue-filtering and the post-equalization circuit, a bandwidth of 151 MHz has been achieved in our VLC system, which allows OOK-NRZ data transmission up to 340 Mb/s. The VLC link operates at 43 cm using a single one Watt white LED, and the bit-error-ratio was below 2 x 10(-3), which is within the forward error correction limit.